| 摘要 |
<p>A pipe handling apparatus is adapted for transferring oil well pipe to and from a drilling rig. The apparatus includes a transportable chassis having tracks for supporting and guiding a reciprocable and rotatable table. A first scissors lift mounted to the table provides vertical motion to a platform on which is mounted a second scissors lift. The second scissors lift is designed to impart vertical and horizontal motion to a conveyor. The conveyor comprises three axially spaced endless belts for moving the pipe longitudinally to the conveyor takeoff point. Tapered spades protrude into the spaces during the pipe return operation to eject the pipe from the conveyor. The conveyor and platform are reciprocable with respect to the second and first scissors lifts, respectively. The chassis includes pivotable arms for raising a pipe to the top of the collapsed scissors lifts so that a pipe rolls onto the conveyor belts prior to lifting.</p> |
